package com.hyl.gulimall.seckill.scheduled;

import com.hyl.gulimall.seckill.service.SeckillService;
import lombok.extern.slf4j.Slf4j;
import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

/**
 * 秒杀商品的定时上架
 *  每天晚上3点；上架最近3天需要的秒杀商品.可以让用户提前预约
 *  当天00:00:00 - 23:59:59
 *  明天00:00:00 - 23:59:59
 *  后天00:00:00 - 23:59:59
 */
@Slf4j
@Service
public class SeckillSkuScheduled {
    @Autowired
    private SeckillService seckillService;

    @Autowired
    private RedissonClient redissonClient;


    private final String upload_lock="seckill:upload:lock";

    //TODO 幂等性处理
    @Scheduled(cron = "0 * * * * ?")
    public void uploadSechillSkulate3Days(){
        //1.重复上架无需处理
        log.info("上架秒杀的商品信息");
        //分布式锁,锁的业务执行完成，状态已经狠心完成，释放锁以后，其他人获取到就会拿到最新的状态
        RLock lock = redissonClient.getLock(upload_lock);
        try {
            lock.lock(10, TimeUnit.SECONDS);
            seckillService.uploadSechillSkulate3Days();
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            lock.unlock();
        }
    }
}
